After about a year of playing, I've FINALLY decided to break my bad habit of playing in three-finger double bass style. I think it's more than time I started doing finger-per-fret. Other than the obvious exercise of practicing chromatic lines, are there any other exercises I can do to stretch out my middle and ring fingers. That's my problem, really. My middle finger always wants to slip down to my ring finger when I place my ring finger independent of my pinky. Anyone have advice on making this particular transition?